You’ve likely heard of the “vomit comet” — an rather graphic nickname for the aircraft used to provide short bursts of near-weightlessness by flying along a parabolic trajectory.
I've joined John on board a specially adapted aircraft to take a parabolic flight ... There's a reason parabolic flights are nicknamed "vomit comets" - it's like riding on a mid-air rollercoaster.
He 'falls' from 15,000 metres on-board a Zero-G flight - a special aircraft, nicknamed the ‘vomit comet’, to experience weightlessness. This clip is from the series Wonders of the Universe.